Vault-13

WESTLAKE CORPORATION WLK

COM · Common Stock · CUSIP 960413102 · ISIN US9604131022

American petrochemical company

343 institutional holders +22 vs Q3 2022
36,374,52536.4m shares reported held*
28.5% of all shares outstanding*
$3.7bnreported value*
62 new 105 added 116 reduced 43 sold out net bought ≈ $114.0m (+1.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($3.0m this quarter). Holder counts are more reliable. Shares outstanding: 127.5m as of 2022-10-28, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $102.56. Options: 10 managers hold calls ($15.7m notional), 10 hold puts ($15.5m).

Trends to Q4 2022

Institutional holders

Managers reporting a position, each quarter

0200400Q3 22: 321Q4 22: 343343Q3 22Q4 22
Numbers
QuarterHolders
Q3 2022321
Q4 2022343

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$10m$20m$30mQ3 22 calls: $21.2mQ3 22 puts: $18.0mQ3 22P/C 0.85Q4 22 calls: $15.7mQ4 22 puts: $15.5mQ4 22P/C 0.99
Numbers
QuarterCallsPutsP/C
Q3 2022$21.2m$18.0m0.85
Q4 2022$15.7m$15.5m0.99

Biggest buyers

Orbis Allan Gray Ltd New +1,956,250+2.0m
BlackRock Inc. Added +1,373,077+1.4m
STATE STREET CORP Added +379,282+379.3k
Pacer Advisors, Inc. Added +342,204+342.2k
CITADEL ADVISORS LLC Added +324,496+324.5k
VICTORY CAPITAL MANAGEMENT INC Added +221,020+221.0k
Bank of New York Mellon Corp Added +168,008+168.0k
Invesco Ltd. Added +161,657+161.7k
Point72 Asset Management, L.P. New +152,699+152.7k
Appian Way Asset Management LP New +148,700+148.7k

Biggest sellers

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Sold out -654,871-654.9k
BANK OF AMERICA CORP /DE/ Reduced -468,790-468.8k
DIMENSIONAL FUND ADVISORS LP Reduced -429,533-429.5k
ACADIAN ASSET MANAGEMENT LLC Reduced -375,635-375.6k
JANUS HENDERSON GROUP PLC Reduced -371,671-371.7k
Verition Fund Management LLC Reduced -335,307-335.3k
FEDERATED HERMES, INC. Reduced -297,487-297.5k
MORGAN STANLEY Reduced -276,212-276.2k
MARSHALL WACE, LLP Sold out -253,380-253.4k
JACOBS LEVY EQUITY MANAGEMENT, INC Sold out -146,956-147.0k

Biggest calls

Walleye Trading LLC Added $4.3m42.1k shares
CITADEL ADVISORS LLC Reduced $4.1m39.6k shares
Cubist Systematic Strategies, LLC Reduced $2.8m26.9k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $2.6m24.9k shares
WOLVERINE TRADING, LLC New $790.0k7.7k shares
JANE STREET GROUP, LLC Added $769.0k7.5k shares
SIMPLEX TRADING, LLC Added $348.0k3.4k shares
PEAK6 Investments LLC Reduced $51.3k500 shares
GROUP ONE TRADING LLC Reduced $20.5k200 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Added $4.6m44.7k shares
D. E. Shaw & Co., Inc. Unchanged $4.0m38.7k shares
SIMPLEX TRADING, LLC Reduced $2.7m26.2k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $1.4m13.7k shares
Cubist Systematic Strategies, LLC Unchanged $912.6k8.9k shares
PEAK6 Investments LLC Reduced $728.0k7.1k shares
JANE STREET GROUP, LLC Reduced $625.5k6.1k shares
Walleye Trading LLC Reduced $307.6k3.0k shares
WOLVERINE TRADING, LLC New $267.0k2.6k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Insider purchases and sales in Q4 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q1 21: 0 buyingQ1 21: 0 sellingQ2 21: 0 buyingQ2 21: 0 sellingQ2 21Q3 21: 0 buyingQ3 21: 0 sellingQ4 21: 0 buyingQ4 21: 2 sellingQ4 21Q1 22: 0 buyingQ1 22: 4 sellingQ2 22: 0 buyingQ2 22: 4 sellingQ2 22Q3 22: 0 buyingQ3 22: 2 sellingQ4 22: 0 buyingQ4 22: 0 sellingQ4 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—2$6.6m—
Q1 20220—4$9.1m—
Q2 20220—4$9.7m—
Q3 20220—2$157.0k—
Q4 20220—0——

None reported in Q4 2022.

Holders, Q4 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.01% of their portfolio New York, NY 3,594,8603.6m $368.6m $368.6m 0.01% Added +1.4m +1,373,077
2 FMR LLC 0.04% of their portfolio BOSTON, MA 3,594,6633.6m $368.6m $368.6m 0.04% Added +25.8k +25,778
3 VANGUARD GROUP INC 0.01% of their portfolio Valley Forge, PA 3,456,5223.5m $354.4m $354.4m 0.01% Added +113.6k +113,647
4 VICTORY CAPITAL MANAGEMENT INC 0.38% of their portfolio San Antonio, TX 3,239,6703.2m $332.2m $332.2m 0.38% Added +221.0k +221,020
5 Soroban Capital Partners LP 2.49% of their portfolio New York, NY 2,021,6742.0m $207.3m $207.3m 2.49% Unchanged
6 Orbis Allan Gray Ltd 1.59% of their portfolio HamiltoN, D0 1,956,2502.0m $200.6m $200.6m 1.59% New
7 DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio AUSTIN, TX 1,708,8351.7m $175.2m $175.2m 0.06% Reduced -429.5k -429,533
8 STATE STREET CORP 0.01% of their portfolio BOSTON, MA 1,125,0201.1m $115.4m $115.4m 0.01% Added +379.3k +379,282
9 Pacer Advisors, Inc. 0.53% of their portfolio Malvern, PA 1,012,4861.0m $103.8m $103.8m 0.53% Added +342.2k +342,204
10 FIRST TRUST ADVISORS LP 0.12% of their portfolio Wheaton, IL 960,738960.7k $98.5m $98.5m 0.12% Added +138.9k +138,910
11 GOLDMAN SACHS GROUP INC 0.02% of their portfolio NEW YORK, NY 837,405837.4k $85.9m $85.9m 0.02% Added +35.7k +35,722
12 Nuveen Asset Management, LLC 0.03% of their portfolio CHICAGO, IL 629,020629.0k $64.5m $64.5m 0.03% Added +5.8k +5,783
13 AQR CAPITAL MANAGEMENT LLC 0.13% of their portfolio Greenwich, CT 559,268559.3k $57.1m $57.1m 0.13% Reduced -102.0k -101,995
14 Mirae Asset Global Investments Co., Ltd. 0.14% of their portfolio SEOUL, M5 520,109520.1k $53.3m $53.3m 0.14% Reduced -16.6k -16,607
15 BANK OF AMERICA CORP /DE/ 0.01% of their portfolio CHARLOTTE, NC 498,417498.4k $51.1m $51.1m 0.01% Reduced -468.8k -468,790
16 GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio BOSTON, MA 451,000451.0k $46.2m $46.2m 0.01% Added +14.6k +14,623
17 Bank of New York Mellon Corp 0.01% of their portfolio NEW YORK, NY 433,329433.3k $44.4m $44.4m 0.01% Added +168.0k +168,008
18 Allspring Global Investments Holdings, LLC 0.06% of their portfolio CHARLOTTE, NC 365,948365.9k $37.5m $37.5m 0.06% Reduced -61.9k -61,895
19 CITADEL ADVISORS LLC 0.04% of their portfolio MIAMI, FL 355,081355.1k $36.4m $36.4m 0.04% Added +324.5k +324,496
20 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio SAN FRANCISCO, CA 337,942337.9k $34.7m $34.7m 0.01% Added +3.3k +3,321
21 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 319,975320.0k $32.8m $32.8m 0.00% Reduced -276.2k -276,212
22 NORGES BANK 0.01% of their portfolio OSLO, Q8 309,334309.3k $31.7m $31.7m 0.01% Reduced -7.4k -7,433
23 NORTHERN TRUST CORP 0.01% of their portfolio CHICAGO, IL 307,537307.5k $31.5m $31.5m 0.01% Added +98.5k +98,463
24 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 263,850263.9k $27.1m $27.1m 0.01% Added +161.7k +161,657
25 FEDERATED HERMES, INC. 0.07% of their portfolio PITTSBURGH, PA 256,532256.5k $26.3m $26.3m 0.07% Reduced -297.5k -297,487
26 Grantham, Mayo, Van Otterloo & Co. LLC 0.13% of their portfolio Boston, MA 243,800243.8k $25.0m $25.0m 0.13% Added +119.1k +119,100
27 ROBOTTI ROBERT 4.69% of their portfolio NEW YORK, NY 229,267229.3k $23.5m $23.5m 4.69% Reduced -699 -699
28 Legal & General Group Plc 0.01% of their portfolio London, X0 228,721228.7k $23.5m $23.5m 0.01% Added +23.5k +23,505
29 JANUS HENDERSON GROUP PLC 0.02% of their portfolio LONDON, X0 227,575227.6k $23.3m $23.3m 0.02% Reduced -371.7k -371,671
30 Swiss National Bank 0.01% of their portfolio ZURICH, V8 155,700155.7k $16.0m $16.0m 0.01% Reduced -10.8k -10,800
31 STOREBRAND ASSET MANAGEMENT AS 0.09% of their portfolio LYSAKER, Q8 152,961153.0k $15.7m $15.7m 0.09% Added +36.0k +36,032
32 Point72 Asset Management, L.P. 0.06% of their portfolio STAMFORD, CT 152,699152.7k $15.7m $15.7m 0.06% New
33 Appian Way Asset Management LP 5.73% of their portfolio NEW YORK, NY 148,700148.7k $15.2m $15.2m 5.73% New
34 GUGGENHEIM CAPITAL LLC 0.13% of their portfolio CHICAGO, IL 147,396147.4k $15.1m $15.1m 0.13% Added +9.3k +9,262
35 SCOUT INVESTMENTS, INC. 0.30% of their portfolio KANSAS CITY, MO 144,866144.9k $14.9m $14.9m 0.30% Reduced -12.3k -12,335
36 Erste Asset Management GmbH 0.31% of their portfolio VIENNA, C4 144,033144.0k $14.8m $14.8m 0.31% Added +21.3k +21,300
37 Verition Fund Management LLC 0.28% of their portfolio GREENWICH, CT 140,267140.3k $14.4m $14.4m 0.28% Reduced -335.3k -335,307
38 PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio DES MOINES, IA 134,908134.9k $13.8m $13.8m 0.01% Added +131.3k +131,255
39 Man Group plc 0.05% of their portfolio LONDON, X0 130,688130.7k $13.4m $13.4m 0.05% Reduced -9.4k -9,380
40 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 130,636130.6k $13.4m $13.4m 0.00% Added +38.8k +38,762
41 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 127,263127.3k $13.0m $13.0m 0.00% Reduced -52.8k -52,775
42 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 126,044126.0k $12.9m $12.9m 0.00% Added +6.7k +6,736
43 VIRGINIA RETIREMENT SYSTEMS ET Al 0.13% of their portfolio RICHMOND, VA 122,300122.3k $12.5m $12.5m 0.13% Reduced -50.8k -50,800
44 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio NEW YORK, NY 121,499121.5k $12.5m $12.5m 0.01% Added +60.4k +60,410
45 Korea Investment CORP 0.04% of their portfolio SEOUL, M5 121,265121.3k $12.4m $12.4m 0.04% Added +106.2k +106,215
46 Balyasny Asset Management L.P. 0.04% of their portfolio Chicago, IL 117,460117.5k $12.0m $12.0m 0.04% Added +29.9k +29,927
47 FORT PITT CAPITAL GROUP, LLC 0.47% of their portfolio Pittsburgh, PA 111,360111.4k $11.4m $11.4m 0.47% Reduced -19.6k -19,623
48 Sumitomo Mitsui Trust Group, Inc. 0.01% of their portfolio CHIYODA-KU, TOKYO, M0 109,891109.9k $11.3m $11.3m 0.01% Reduced -735 -735
49 SPROTT INC. 0.96% of their portfolio TORONTO, A6 105,000105.0k $10.8m $10.8m 0.96% Unchanged
50 RHUMBLINE ADVISERS 0.01% of their portfolio BOSTON, MA 102,649102.6k $10.5m $10.5m 0.01% Added +64.3k +64,341
51 SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.17% of their portfolio BALA CYNWYD, PA 94,48694.5k $9.7m $9.7m 0.17% Reduced -21.6k -21,641
52 LUMINUS MANAGEMENT LLC 2.64% of their portfolio HOUSTON, TX 90,55090.5k $9.3m $9.3m 2.64% New
53 Vident Investment Advisory, LLC 0.32% of their portfolio Alpharetta, GA 81,56281.6k $8.4m $8.4m 0.32% Added +14.2k +14,154
54 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 81,00281.0k $8.3m $8.3m 0.00% Added +33.9k +33,857
55 CREDIT SUISSE AG/ 0.01% of their portfolio ZURICH, V8 79,31279.3k $8.1m $8.1m 0.01% Reduced -56.4k -56,373
56 Yaupon Capital Management LP 1.41% of their portfolio NEW YORK, NY 76,63976.6k $7.9m $7.9m 1.41% Added +52.0k +52,000
57 WINMILL & CO. INC 2.61% of their portfolio WALPOLE, NH 70,00070.0k $7.2m $7.2m 2.61% Unchanged
58 WEDGE CAPITAL MANAGEMENT L L P/NC 0.11% of their portfolio CHARLOTTE, NC 66,04566.0k $6.8m $6.8m 0.11% Reduced -2.3k -2,273
59 CONTRAVISORY INVESTMENT MANAGEMENT, INC. 1.87% of their portfolio Norwell, MA 65,76065.8k $6.7m $6.7m 1.87% Added +776 +776
60 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 61,01661.0k $6.3m $6.3m 0.01% Added +8.4k +8,434
61 Ensign Peak Advisors, Inc 0.01% of their portfolio SALT LAKE CITY, UT 60,68360.7k $6.2m $6.2m 0.01% Added +9.8k +9,808
62 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio WEST SACRAMENTO, CA 58,94858.9k $6.0m $6.0m 0.01% Reduced -4.0k -4,018
63 AMERICAN INTERNATIONAL GROUP, INC. 0.04% of their portfolio New York, NY 53,61653.6k $5.5m $5.5m 0.04% Added +53.3k +53,270
64 Amundi 0.00% of their portfolio Paris, I0 53,29753.3k $6.0m $6.0m 0.00% Reduced -100.5k -100,478
65 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 52,31252.3k $5.4m $5.4m 0.00% Added +4.2k +4,225
66 STRS OHIO 0.02% of their portfolio COLUMBUS, OH 50,90450.9k $5.2m $5.2m 0.02% Added +958 +958
67 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 46,34746.3k $4.8m $4.8m 0.00% Reduced -1.6k -1,646
68 ACADIAN ASSET MANAGEMENT LLC 0.02% of their portfolio Boston, MA 45,88145.9k $4.7m $4.7m 0.02% Reduced -375.6k -375,635
69 Brookfield Corp /ON/ 0.02% of their portfolio TORONTO, A6 45,67645.7k $4.7m $4.7m 0.02% Not comparable
70 Retirement Systems of Alabama 0.02% of their portfolio MONTGOMERY, AL 45,38645.4k $4.7m $4.7m 0.02% New
71 Squarepoint Ops LLC 0.03% of their portfolio NEW YORK, NY 41,09541.1k $4.2m $4.2m 0.03% Reduced -35.9k -35,851
72 Empowered Funds, LLC 0.28% of their portfolio NEWTOWN SQUARE, PA 41,07541.1k $4.2m $4.2m 0.28% Reduced -2.1k -2,113
73 Faithward Advisors, LLC 0.87% of their portfolio LANCASTER, PA 39,15039.1k $4.0m $4.0m 0.87% Reduced -2.6k -2,593
74 PANAGORA ASSET MANAGEMENT INC 0.03% of their portfolio BOSTON, MA 38,47638.5k $3.9m $3.9m 0.03% Reduced -98.8k -98,761
75 State of Tennessee, Department of Treasury 0.02% of their portfolio NASHVILLE, TN 37,26637.3k $3.8m $3.8m 0.02% Unchanged
76 Smith, Graham & Co., Investment Advisors, LP 0.46% of their portfolio Houston, TX 36,91936.9k $3.8m $3.8m 0.46% Reduced -765 -765
77 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio TALLAHASSEE, FL 36,73336.7k $3.8m $3.8m 0.01% Added +940 +940
78 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 36,39136.4k $3.7m $3.7m 0.00% First filing
79 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 36,30336.3k $3.7m $3.7m 0.01% Reduced -812 -812
80 Alyeska Investment Group, L.P. 0.04% of their portfolio CHICAGO, IL 35,40035.4k $3.6m $3.6m 0.04% New
81 AVIVA PLC 0.02% of their portfolio LONDON, X0 35,01535.0k $3.6m $3.6m 0.02% Added +30.4k +30,414
82 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.06% of their portfolio Stamford, CT 34,99935.0k $3.6m $3.6m 0.06% New
83 CLARK ESTATES INC/NY 0.74% of their portfolio NEW YORK, NY 34,60034.6k $3.5m $3.5m 0.74% Unchanged
84 Quantinno Capital Management LP 0.26% of their portfolio NEW YORK, NY 33,71633.7k $3.5m $3.5m 0.26% Added +14.6k +14,594
85 BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio PARIS, I0 32,43932.4k $3.3m $3.3m 0.01% Reduced -86.9k -86,920
86 PRUDENTIAL FINANCIAL INC 0.01% of their portfolio NEWARK, NJ 31,85631.9k $3.3m $3.3m 0.01% Reduced -68.9k -68,877
87 HUSSMAN STRATEGIC ADVISORS, INC. 0.52% of their portfolio ELLICOTT CITY, MD 31,00031.0k $3.2m $3.2m 0.52% Unchanged
88 CANADA LIFE ASSURANCE Co 0.01% of their portfolio WINNIPEG, A2 29,39229.4k $3.0m $3.0m 0.01% Added +19.7k +19,744
89 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 29,13929.1k $3.0m $3.0m 0.00% Added +26.6k +26,613
90 Swedbank AB 0.01% of their portfolio STOCKHOLM, V7 28,95329.0k $3.0m $3.0m 0.01% Unchanged
91 MERCER GLOBAL ADVISORS INC /ADV 0.01% of their portfolio DENVER, CO 28,92628.9k $3.0m $3.0m 0.01% Added +3.8k +3,809
92 State of Alaska, Department of Revenue 0.04% of their portfolio JUNEAU, AK 28,73428.7k $2.9m $2.9m 0.04% Added +6.0k +5,980
93 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.04% of their portfolio New York, NY 28,26728.3k $2.9m $2.9m 0.04% New
94 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 26,97227.0k $2.8m $2.8m 0.00% Reduced -337 -337
95 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 26,67526.7k $2.7m $2.7m 0.00% Reduced -968 -968
96 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 26,31326.3k $2.7m $2.7m 0.00% Added +134 +134
97 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 25,77825.8k $2.6m $2.6m 0.00% Reduced -17.7k -17,691
98 AMALGAMATED BANK 0.02% of their portfolio NEW YORK, NY 25,74325.7k $2.6m $2.6m 0.02% Added +21.9k +21,855
99 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 23,72123.7k $2.4m $2.4m 0.00% Reduced -35.3k -35,316
100 TEXAS PERMANENT SCHOOL FUND CORP 0.04% of their portfolio AUSTIN, TX 23,15023.1k $2.4m $2.4m 0.04% New